Filter



July 10, 1945. w. H. 'SAYLER 2,379,930

FILTER Filed Abril 25, 1942 ffy/mn; Slag/ef g l patentes Jply 1o, 1945` 1 williaiiiirsayler;saumkecity.pmigpssignorif of one-half to H. E. Bassford, SaltLake City,

Utah i Application April 23,1942, serial 44ans Liciaims. (ci. 18g-r1)A My invention relates to filters and the like and has for its object to provide anew and highly eilicient filter primarily for use in filtering dust and pollen from air, prior to entering an aircon- I ditioner unit.

A further object is to provide a highly efficient economically manufactured filter unit for filtering air and other gases and which unit may be quickly and easily cleaned or in drastic circumstances the filter may be quickly dismantled and:

the cloth thrown away and renewed or if. only dirty the cloth may be washed and reused. Also in some cases the lter and frame may be simply turned so that the deposit side is down and the filter vigorously shaken, cleaning off` all foreign particles from the collecting surface.

A still further object is to provide a simple l filter which may be quickly immersed and washed for cleaning purposes without dismantling the filter from the frame.

These and other objects I accomplish with the y device illustrated in the accompanying drawing in which similar numerals and letters of reference indicate vlike parts throughout the several views and as described in the specification forming a part of this invention appended claims.

In the drawing,

` Figure 1 is a vertical transverse section through one f my filters. q

Figure 2 is a face view thereof.

t and pointed out in the 1 Figure 3 is a sectional view of. a modified cylinl l der used in the filter.`

Figure 4 is an end view of Figure 3. l

Figure 5 is a still further modifledform of cylinder. l Figure 6 is an end view of Figure 5.

Figure '7` is'a view to illustrate how the springs of theiirst form and the fabric are placed in the framework.

In the drawing in which I have shown my invention Figures 1 and 2 illustrate the invention in its simplified embodiment. The invention consists of a filter cloth A, of suitable `material to Vor placed abutting against the inside of the topi of the frame extending fromthe face where it is tion and keep themfrom secured to the opposite open face of the frame shown in-` theV drawing as the fold or layer 1. A

row of spaced apart springs 6 are then placed adjacentthislfold of cloth andare so held apart y until the cloth can be folded back over the first springs. This is `designated as the fold 81 in the drawing. Another row of springs 6 is then placed in the spaces between the first springs, and so that the ciothis folded forward and napkin the Another` frame `once with the full row of springs. row of spaced apart springs 9 is then placed against the fold orv layer 8`of the filter fabric and p. the fabric l again` folded back covering these springs 9, leaving a" space between each pair of springs in a like manner to that of the row 6 and the fabric is then folded back againto theopposite faceof the frameB at which time the balance of the full row of springs 9 is placed abutting the fold `of fabric in the space left Vbetween `the first springs 9 and the fabric is again folded back in a, like manner covering these last springs making ready for a third row of springs. This set` ting of the springs and covering by folding the f fabric is continued until the entire frame B is filled with fabric enfolded springs S. The springs .l S are slightly offset in relation to the next alternating row to cover the most or greatest possible area of cloth surface and tiers of alternating rows of springs are set one on the other alternating, vertically and horizontally with the` cloth covering the ends I 0 of alternating rows 6 and the `ends I I of the alternating rows 9, thereby provid-f ing alternating elongated filtering sockets or openingsspaced from each otherby `alternating rows of spring ends inone directionof travelf of air `whe-n passing through the filter. Each end of the filterframe is providedwith `aretaining screen or framework so that forced 'draft through the filter will not dislodge the filter frlomits framework. lThe sides or edges `of the cloth are lheld adjacent the side walls I4 of the frame by the spring pressure to holdthem in `filtering posispring. i t

The springs act aslter frames for the cloth `and may be slightly tapered or may be evenly wound on a. common axis with a common distead of the springs if desired such` as a tubulart ameter. Other suitable frames may be used inframe I 6 having transverse perforations I'I therein as shown in Figures 3 and 4 of the drawing or as `shown in Figures 5 and 6 the tubularframe I8, may be made of a wire screen forming autubular body. It will also be possibleto use a refraci tory tube. in some cases.

` rompi slipping from the filter Having thus described my invention I desire to secure by Letters Patent and claim:

1. A filter comprising a framework; rows of springs carried in said framework; and fabric wound over said springs to form a fabric socket around each spring open at one end only, the fabric being so folded startingfrorn the top of the framework that it encompasses spaced springs when folded in one direction and ODDositely encompasses the springs filling the spaces between the first spaced springs when folded in the opposite direction and so interfolded around and over the rows of springs that they form opposed spaced apart individual columnar sockets inthe fabric into which the air passes prorto passing through the filterr fabric.

2. A lter comprising a framework; a'sheet of fabric secured to said framework; rows of springs carried in said framework each row being setin individually, in foldsv of said fabric spaced apart by another spring set into the fabric from the opposite side ofthe framework forming alternate spaced tubular sockets from each side of the framework forltering. air passing therethrough.'

.work to hold the fabric and springs in position.

` 4. A device as set out in claim 2 including perforate means to hold the springs and lter fabric WILLIAM H. SAYLER. 

